Humic acid-based composite water retaining agent and preparation method thereof

A technology of humic acid and water-retaining agent, applied in chemical instruments and methods, fertilizer mixtures, applications, etc., can solve the problems of high cost, poor salt tolerance and water-retention performance of agricultural water-retaining agents, and achieve improved water retention performance and increase the effect of aging. , the effect of reducing production costs

Active Publication Date: 2018-12-07
SHAANXI ESTATE DEV SERVICE CORP
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a humic acid-based composite water-retaining agent and its preparation method. Two kinds of clay are added to the structure of the water-retaining agent through in-situ polymerization, surface crosslinking, and surface coating modification technology

Method used

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  • Humic acid-based composite water retaining agent and preparation method thereof
  • Humic acid-based composite water retaining agent and preparation method thereof

Examples

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Embodiment Construction

[0027] A kind of humic acid-based composite water-retaining agent of the present invention, the embodiment example of its raw material ratio by weight is shown in the following table:

[0028] Table 1

[0029] Unit: part

[0030]

[0031] In the above-mentioned Examples 1 to 3, the bentonite is selected from sodium-based bentonite, the initiator is selected from potassium persulfate, the dispersant is a double dispersant formed by mixing Span80 and Tween80 in a mass ratio of 1:1, and the water-soluble crosslinking agent N, N-methylene bisacrylate ammonium is selected, epichlorohydrin is selected as oil-soluble crosslinking agent, 3-(2,3-epoxypropoxy)propyltrimethoxysilane is selected as coupling agent, and bentonite is 100 mesh .

[0032] In the above Examples 3 to 6, the bentonite is calcium-based bentonite, the initiator is ammonium persulfate, the dispersant is a double dispersant mixed with Span80 and Tween80 in a mass ratio of 1:0.5, and the water-soluble crosslinkin...

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Abstract

The invention belongs to the technical field of water absorbing resin and relates to a humic acid-based composite water retaining agent. The humic acid-based composite water retaining agent solves thetechnical problem that the existing agricultural water retaining agent has a high cost, poor salt tolerance and poor water retention performances. The humic acid-based composite water retaining agentcomprises, by weight, 1 to 5 parts of potassium humate, 20 parts of acrylic acid, 8 to 14 parts of potassium hydroxide, 1 to 5 parts of 2-acrylamido-2-methylpropanesulfonic acid, 100 to 160 parts ofcyclohexane, 1 to 2 parts of a dispersing agent, 0.1 to 0.5 parts of an initiator, 0.008 to 0.05 parts of a water-soluble crosslinking agent, 0.008 to 0.04 parts of an oil-soluble crosslinking agent,0.02 to 0.1 parts of a coupling agent, 0.2 to 5 parts of bentonite and 0.2 to 5 parts of kaolin. The invention also provides a preparation method of the humic acid-based composite water retaining agent.

Description

technical field [0001] The invention belongs to the technical field of water-absorbing resins, and in particular relates to a humic acid-based composite water-retaining agent and a preparation method thereof. Background technique [0002] my country is a country with a large area of ​​semi-arid, arid and desert areas. Drought and water shortage and the resulting land degradation are one of the important factors restricting the sustainable development of agriculture. Effectively implementing agricultural water-saving measures in drylands, actively developing agricultural water-saving and moisture-conserving technologies, and scientifically utilizing limited regional water resources are not only the only way for the development of modern dryland agriculture, but also a major problem in the organic reconstruction of soil in arid areas. [0003] The water-retaining agent is a moderately cross-linked, highly expandable polymer water-absorbing gel with a complex network structure,...

Claims

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Application Information

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IPC IPC(8): C08F289/00C08F220/06C08F220/58C08K3/34C09K17/40
CPCC08F289/00C08K3/346C08K2201/014C09K17/40C08F220/06
Inventor 葛磊王荧师晨迪孙绪博
Owner SHAANXI ESTATE DEV SERVICE CORP
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